Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 14 · 40 questions

What you do (Bounce, bounce, see): 1. An adult cuts a window near the top on one side of the carton and near the bottom on the other. 2. Tape one mirror at 45° behind each window, the two mirrors facing each other. 3. Look into the bottom window and adjust the mirrors until the view is clear. 4. Peep over a table or wall — never point it at the Sun.

1. 1.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
2. 2.🧺 Which of these is needed for the periscope? (a) sticky tape (b) a magnet (c) a battery cell (d) a balloon
3. 3.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) a rainbow (c) only darkness (d) a brighter view
4. 4.🔍 Which is the odd one out? (a) still clear water (b) a mirror (c) dark soil (d) a shiny steel plate
5. 5.🔭 How many times does light bounce off a mirror in a simple periscope?
6. 6.True or false: an empty juice carton is not needed for the periscope. (a) False (b) True
7. 7.🔭 Who uses a periscope to look above the water? (a) a baker (b) a pilot in a plane (c) a submarine crew (d) a farmer
8. 8.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is kept the same. (a) False (b) True
9. 9.True or false: a magnet is needed for the periscope. (a) True (b) False
10. 10.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same carton (b) the angle of the mirrors (c) how clear the view is
11. 11.True or false: yeast is needed for the periscope. (a) True (b) False
12. 12.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 45 degrees (c) 90 degrees (d) 180 degrees
13. 13.🔍 Which is the odd one out? (a) a mirror (b) black cloth (c) a shiny steel plate (d) aluminium foil
14. 14.🔭 How many mirrors does a simple periscope use?
15. 15.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
16. 16.True or false: a rough wooden board reflects light well. (a) True (b) False
17. 17.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the same mirrors (b) the angle of the mirrors (c) the object we look at (d) the same light
18. 18.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we change it (b) we measure it (c) we keep it the same
19. 19.🔭 Does dark soil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
20. 20.🔭 Which of these reflects light well? (a) a rough wooden board (b) a shiny steel plate (c) black cloth (d) a dull brick
21. 21.🛟 Which mirrors are safest for a children’s periscope? (a) plastic safety mirrors (b) big wall mirrors (c) loose glass panes (d) broken glass bits
22. 22.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we measure it (b) we keep it the same (c) we change it
23. 23.🔍 Which is the odd one out? (a) still clear water (b) a rough wooden board (c) aluminium foil (d) a mirror
24. 24.🧺 Do we need sticky tape for the periscope? (a) needed (b) not needed
25. 25.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) two small mirrors (c) sticky tape (d) yeast
26. 26.🔭 Which of these reflects light well? (a) a dull brick (b) a rough wooden board (c) black cloth (d) still clear water
27. 27.True or false: vinegar is needed for the periscope. (a) True (b) False
28. 28.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
29. 29.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same light (b) how clear the view is (c) the angle of the mirrors
30. 30.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) a mirror (c) black cloth (d) aluminium foil
31. 31.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
32. 32.True or false: dark soil reflects light well. (a) True (b) False
33. 33.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
34. 34.True or false: turmeric powder is needed for the periscope. (a) False (b) True
35. 35.🔭 What does a periscope let you do? (a) hear far sounds (b) see germs (c) see over a wall (d) see in the dark
36. 36.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) upside down only (c) in colour (d) flipped left to right
37. 37.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is the one thing we change. (a) False (b) True
38. 38.📘 Light bouncing off a mirror is called ___. (a) reflection (b) refraction (c) magnetism (d) evaporation
39. 39.True or false: a shiny steel plate reflects light poorly. (a) False (b) True
40. 40.True or false: a ruler is not needed for the periscope. (a) False (b) True

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